So I bought Doom BFG EDITION from steam. It came with doom 1-2 and 3. I was wondering if this version of doom would be allowed for speed running if not can you pleas send me in the right way. Thanks

I can't say for sure, but I believe the only difference between the classic versions of Ultimate Doom / Doom 2 and the BFG Edition bundle is Nightmare mode. Not sure if it's only a console thing and not a PC thing, but I've seen complaints about fast monsters and projectiles not existing in Nightmare mode on the console versions of 1 and 2 on BFG Edition. Not sure if that holds true for PC.

Other than Nightmare, though, I believe the games are identical to the standalone versions.